One cow is fed a growth hormone and another cow is not. After a year, both cows are weighed. What is the IV?

• Cows

• Growth hormone

• Weight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. What is the IV?

• Number of Mosquitos

• Repellent sprayed

• Number of mosquito bites

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Javier sleeps 9 hours the night before his science exam. His twin sister has the same exam and sleeps 6 hours the night before the test. Afterwards, they compare their scores. What is the IV?

• Javier

• Twin sister

• Sleep time

• Scores

Two cars are on a track and accelerate to 60 mph. At a certain point, both cars slam on the brakes. The distance it takes for each car to stop is then measured. What is the IV?

• Types of cars

• Slamming on the brakes

• Distance to stop

• 60 mph

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Group A exercises for a month. Group B does not exercise. They measure the amount of weight they gain. What is the IV?

• Amount of Exercise

• Amount of Weight

• Number of people in group A and B

One company states that it makes the best staplers. To prove it, they use the stapler to staple a thousand papers and compare it to a competitor. The competitor’s stapler jammed 3 x whereas their stapler only jammed once. What is the IV?

• Number of Jams

• Thousand papers

• Brand of staplers

Ants are placed in a tray that is shaped like a T, at the end of the T, the ants can either go to a darkened area or a light area. Students count how many ants end up on the dark side and how many ends up on the light side. What is the IV?

• Number of Ants

• Light and dark side of tray

• Number of Students

A pediatrician designs baby formula to help babies gain weight. To show his formula works, he compares the weights of babies that have been using the formula to the weights of babies not on the formula. What is the IV?

• Pediatrician

• Baby formula

• Weights of babies

• Parents

Tags

NGSS.MS-ETS1-1

Cockroaches are exposed to the chemical dioxin. After 3 hours, 45/100 cockroaches are dead. What is the IV?

• Number of cockroaches

• Chemical exposure

• 3 hours

• 45/100

Tags

NGSS.MS-LS2-4

New houses are spayed on the outside with an insulating paint. After a year, researchers determine how much energy each house used. What is the IV?

• Paint sprayed

• Researchers

• amount of energy used

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4